package cn.zonhar.utils;

import java.math.BigDecimal;
import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * @author 
 * @version 1.0
 * @description 时间工具类
 * @date 2021/6/8 18:52
 * @params
 * @return
 */
public class DateUtils {
    /**
     * calendar.add(calendar.YEAR, 1);//把日期往后增加一年.整数往后推,负数往前移动
     * calendar.add(calendar.DAY_OF_MONTH, 1);//把日期往后增加一个月.整数往后推,负数往前移动
     * calendar.add(calendar.DATE, 1);//把日期往后增加一天.整数往后推,负数往前移动
     * calendar.add(calendar.WEEK_OF_MONTH, 1);//把日期往后增加一个月.整数往后推,负数往前移动
     * date = calendar.getTime();   //这个时间就是日期往后推一天的结果
     */
 
	/**********************************涉及年的时间处理*******************************************/
    // 获取今年是哪一年
    public static Integer getNowYear() {
        Date date = new Date();
        GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
        gc.setTime(date);
        return Integer.valueOf(gc.get(1));
    }
	
    // 获取本年的开始时间
    public static java.util.Date getBeginDayOfYear() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, getNowYear());
        // cal.set
        cal.set(Calendar.MONTH, Calendar.JANUARY);
        cal.set(Calendar.DATE, 1);
 
        return getDayStartTime(cal.getTime());
    }
 
    // 获取本年的结束时间
    public static java.util.Date getEndDayOfYear() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, getNowYear());
        cal.set(Calendar.MONTH, Calendar.DECEMBER);
        cal.set(Calendar.DATE, 31);
        return getDayEndTime(cal.getTime());
    }
	
    // 获取某年某月的第一天日期
    public static Date getStartMonthDate(int year, int month) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(year, month - 1, 1);
        return calendar.getTime();
    }
	
    // 返回时间的年份
    public static int getYear(Date time) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(time);
        return calendar.get(Calendar.YEAR);
    }
	
    // 获取某年某月的最后一天日期
    public static Date getEndMonthDate(int year, int month) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(year, month - 1, 1);
        int day = calendar.getActualMaximum(5);
        calendar.set(year, month - 1, day);
        return calendar.getTime();
    } 
	
    // 获取某年某月 到 某年某月按天的切片日期集合（间隔天数的日期集合）
    public static List getTimeList(int beginYear, int beginMonth, int endYear, int endMonth, int k) {
        List list = new ArrayList();
        if (beginYear == endYear) {
            for (int j = beginMonth; j <= endMonth; j++) {
                list.add(getTimeList(beginYear, j, k));
 
            }
        } else {
            {
                for (int j = beginMonth; j < 12; j++) {
                    list.add(getTimeList(beginYear, j, k));
                }
 
                for (int i = beginYear + 1; i < endYear; i++) {
                    for (int j = 0; j < 12; j++) {
                        list.add(getTimeList(i, j, k));
                    }
                }
                for (int j = 0; j <= endMonth; j++) {
                    list.add(getTimeList(endYear, j, k));
                }
            }
        }
        return list;
    }
 
    // 获取某年某月按天切片日期集合（某个月间隔多少天的日期集合）
    public static List getTimeList(int beginYear, int beginMonth, int k) {
        List list = new ArrayList();
        Calendar begincal = new GregorianCalendar(beginYear, beginMonth, 1);
        int max = begincal.getActualMaximum(Calendar.DATE);
        for (int i = 1; i < max; i = i + k) {
            list.add(begincal.getTime());
            begincal.add(Calendar.DATE, k);
        }
        begincal = new GregorianCalendar(beginYear, beginMonth, max);
        list.add(begincal.getTime());
        return list;
    }
	/**********************************涉及年的时间处理*******************************************/
	
	/**********************************涉及季度的时间处理*****************************************/
    // 获取季度开始时间
    public static Date getCurrentQuarterStartTime(Date time) {
        Calendar c = Calendar.getInstance();
        c.setTime(time);
        int currentMonth = c.get(Calendar.MONTH) + 1;
        Date now = null;
        try {
            SimpleDateFormat longSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            SimpleDateFormat shortSdf = new SimpleDateFormat("yyyy-MM-dd");
 
            if (currentMonth >= 1 && currentMonth <= 3) {
                c.set(Calendar.MONTH, 0);
            } else if (currentMonth >= 4 && currentMonth <= 6) {
                c.set(Calendar.MONTH, 3);
            } else if (currentMonth >= 7 && currentMonth <= 9) {
                c.set(Calendar.MONTH, 4);
            } else if (currentMonth >= 10 && currentMonth <= 12) {
                c.set(Calendar.MONTH, 9);
            }
            c.set(Calendar.DATE, 1);
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }
 
    // 获取季度结束时间
    public static Date getCurrentQuarterEndTime(Date time) {
        Calendar c = Calendar.getInstance();
        c.setTime(time);
        int currentMonth = c.get(Calendar.MONTH) + 1;
        Date now = null;
        try {
            SimpleDateFormat longSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            SimpleDateFormat shortSdf = new SimpleDateFormat("yyyy-MM-dd");
 
            if (currentMonth >= 1 && currentMonth <= 3) {
                c.set(Calendar.MONTH, 2);
                c.set(Calendar.DATE, 31);
            } else if (currentMonth >= 4 && currentMonth <= 6) {
                c.set(Calendar.MONTH, 5);
                c.set(Calendar.DATE, 30);
            } else if (currentMonth >= 7 && currentMonth <= 9) {
                c.set(Calendar.MONTH, 8);
                c.set(Calendar.DATE, 30);
            } else if (currentMonth >= 10 && currentMonth <= 12) {
                c.set(Calendar.MONTH, 11);
                c.set(Calendar.DATE, 31);
            }
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }
 
    // 返回某月该季度的第一个月
    public static Date getFirstSeasonDate(Date date) {
        final int[] SEASON = {1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4};
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int sean = SEASON[cal.get(Calendar.MONTH)];
        cal.set(Calendar.MONTH, sean * 3 - 3);
        return cal.getTime();
    }
	/**********************************涉及季度的时间处理*****************************************/
	
	/**********************************涉及月的时间处理*******************************************/
    // 获取本月是哪一月
    public static int getNowMonth() {
        Date date = new Date();
        GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
        gc.setTime(date);
        return gc.get(2) + 1;
    }
    // 返回时间的月份
    public static int getMonth(Date time) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(time);
        return calendar.get(Calendar.MONTH) + 1;
    }
 
    // 获取本月的开始时间
    public static Date getBeginDayOfMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(getNowYear(), getNowMonth() - 1, 1);
        return getDayStartTime(calendar.getTime());
    }
 
    // 获取本月的结束时间
    public static Date getEndDayOfMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(getNowYear(), getNowMonth() - 1, 1);
        int day = calendar.getActualMaximum(5);
        calendar.set(getNowYear(), getNowMonth() - 1, day);
        return getDayEndTime(calendar.getTime());
    }
	
    // 获取某月开始时间
    public static Date getCurrentMonthStartTime(Date time) {
        Calendar c = Calendar.getInstance();
        c.setTime(time);
        Date now = null;
        try {
            SimpleDateFormat shortSdf = new SimpleDateFormat("yyyy-MM-dd");
 
            c.set(Calendar.DATE, 1);
            now = shortSdf.parse(shortSdf.format(c.getTime()));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }
 
    // 获取某月结束时间
    public static Date getCurrentMonthEndTime(Date time) {
        Calendar c = Calendar.getInstance();
        c.setTime(time);
        Date now = null;
        try {
            SimpleDateFormat longSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            SimpleDateFormat shortSdf = new SimpleDateFormat("yyyy-MM-dd");
            c.set(Calendar.DATE, 1);
            c.add(Calendar.MONTH, 1);
            c.add(Calendar.DATE, -1);
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }
 
    // 获取上个月的开始时间
    public static Date getBeginDayOfLastMonth() {
        Date date = new Date();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.MONTH, -1);
        calendar.set(Calendar.DAY_OF_MONTH, 1);
        return getDayStartTime(calendar.getTime());
    }
 
    // 获取上个月的结束时间
    public static Date getEndDayOfLastMonth() {
        Date date = new Date();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.MONTH, -1);
        int day = calendar.getActualMaximum(5);
        calendar.set(Calendar.DAY_OF_MONTH, day);
        return getDayEndTime(calendar.getTime());
    }
	/**********************************涉及月的时间处理*******************************************/
 
	/**********************************涉及星期的时间处理*****************************************/
    //返回星期数
    public static String dateToWeek(Date datetime) {
        String[] weekDays = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
        Calendar cal = Calendar.getInstance(); // 获得一个日历
        cal.setTime(datetime);
        int w = cal.get(Calendar.DAY_OF_WEEK) - 1; // 指示一个星期中的某天。
        if (w < 0) {
            w = 0;
        }
        return weekDays[w];
    }
	
    // 获取本周的开始时间
    public static Date getBeginDayOfWeek() {
        Date date = new Date();
        if (date == null) {
            return null;
        }
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int dayofweek = cal.get(Calendar.DAY_OF_WEEK);
        if (dayofweek == 1) {
            dayofweek += 7;
        }
        cal.add(Calendar.DATE, 2 - dayofweek);
        return getDayStartTime(cal.getTime());
    }
 
    // 获取本周的结束时间
    public static Date getEndDayOfWeek() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getBeginDayOfWeek());
        cal.add(Calendar.DAY_OF_WEEK, 6);
        Date weekEndSta = cal.getTime();
        return getDayEndTime(weekEndSta);
    }
	/**********************************涉及星期的时间处理*****************************************/
	
	/**********************************涉及天的时间处理*******************************************/
    // 返回某个日期下几天的日期
    public static Date getNextDay(Date date, int i) {
        Calendar cal = new GregorianCalendar();
        cal.setTime(date);
        cal.set(Calendar.DATE, cal.get(Calendar.DATE) + i);
        return cal.getTime();
    }
 
    // 返回某个日期前几天的日期
    public static Date getFrontDay(Date date, int i) {
        Calendar cal = new GregorianCalendar();
        cal.setTime(date);
        cal.set(Calendar.DATE, cal.get(Calendar.DATE) - i);
        return cal.getTime();
    }
	
    // 获取某个日期的开始时间
    public static Timestamp getDayStartTime(Date d) {
        Calendar calendar = Calendar.getInstance();
        if (null != d) {
            calendar.setTime(d);
        }
        calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0,
                0, 0);
        calendar.set(Calendar.MILLISECOND, 0);
        return new Timestamp(calendar.getTimeInMillis());
    }
 
    // 获取某个日期的结束时间
    public static Timestamp getDayEndTime(Date d) {
        Calendar calendar = Calendar.getInstance();
        if (null != d) {
            calendar.setTime(d);
        }
        calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 23,
                59, 59);
        calendar.set(Calendar.MILLISECOND, 999);
        return new Timestamp(calendar.getTimeInMillis());
    }
	
    // 获取当天的开始时间
    public static java.util.Date getDayBegin() {
        Calendar cal = new GregorianCalendar();
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        return cal.getTime();
    }
 
    // 获取当天的结束时间
    public static java.util.Date getDayEnd() {
        Calendar cal = new GregorianCalendar();
        cal.set(Calendar.HOUR_OF_DAY, 23);
        cal.set(Calendar.MINUTE, 59);
        cal.set(Calendar.SECOND, 59);
        return cal.getTime();
    }
 
    // 获取昨天的开始时间
    public static Date getBeginDayOfYesterday() {
        Calendar cal = new GregorianCalendar();
        cal.setTime(getDayBegin());
        cal.add(Calendar.DAY_OF_MONTH, -1);
        return cal.getTime();
    }
 
    // 获取昨天的结束时间
    public static Date getEndDayOfYesterDay() {
        Calendar cal = new GregorianCalendar();
        cal.setTime(getDayEnd());
        cal.add(Calendar.DAY_OF_MONTH, -1);
        return cal.getTime();
    }
 
    // 获取明天的开始时间
    public static Date getBeginDayOfTomorrow() {
        Calendar cal = new GregorianCalendar();
        cal.setTime(getDayBegin());
        cal.add(Calendar.DAY_OF_MONTH, 1);
 
        return cal.getTime();
    }
 
    // 获取明天的结束时间
    public static Date getEndDayOfTomorrow() {
        Calendar cal = new GregorianCalendar();
        cal.setTime(getDayEnd());
        cal.add(Calendar.DAY_OF_MONTH, 1);
        return cal.getTime();
    }
	/**********************************涉及天的时间处理*******************************************/
 
	/**********************************涉及时间计算处理*******************************************/
    // 时间加上秒数得到新时间
    public static Date dayAddSecond(Date time, Integer second) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(time);
        calendar.add(Calendar.SECOND, second);
        return calendar.getTime();
    }
 
    // 时间加上分钟得到新时间
    public static Date dayAddMinute(Date time, Integer minute) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(time);
        calendar.add(Calendar.MINUTE, minute);
        return calendar.getTime();
    }
 
    // 时间加上小时得到新时间
    public static Date dayAddHour(Date time, Integer hour) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(time);
        calendar.add(Calendar.HOUR_OF_DAY, hour);
        return calendar.getTime();
    }
 
    // 时间加上天数得到新时间
    public static Date dayAddNum(Date time, Integer day) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(time);
        calendar.add(Calendar.DAY_OF_MONTH, day);
        return calendar.getTime();
    }
	
    // 两个日期相减得到的天数
    public static int getDiffDays(Date beginDate, Date endDate) {
 
        if (beginDate == null || endDate == null) {
            throw new IllegalArgumentException("getDiffDays param is null!");
        }
 
        long diff = (endDate.getTime() - beginDate.getTime()) / (1000 * 60 * 60 * 24);
 
        int days = new Long(diff).intValue();
 
        return days;
    }
 
    // 两个日期相减得到的毫秒数
    public static long dateDiff(Date beginDate, Date endDate) {
        long date1ms = beginDate.getTime();
        long date2ms = endDate.getTime();
        return date2ms - date1ms;
    }
	/**********************************涉及时间计算处理*******************************************/
 
	/**********************************涉及时间比较判断处理***************************************/
    // 获取两个日期中的最大日期
    public static Date max(Date beginDate, Date endDate) {
        if (beginDate == null) {
            return endDate;
        }
        if (endDate == null) {
            return beginDate;
        }
        if (beginDate.after(endDate)) {
            return beginDate;
        }
        return endDate;
    }
 
    // 获取两个日期中的最小日期
    public static Date min(Date beginDate, Date endDate) {
        if (beginDate == null) {
            return endDate;
        }
        if (endDate == null) {
            return beginDate;
        }
        if (beginDate.after(endDate)) {
            return endDate;
        }
        return beginDate;
    }
 
    // 判断一个时间是否在一个时间段内
    public static boolean belongCalendar(Date time, Date beginTime, Date endTime) {
        Calendar date = Calendar.getInstance();
        date.setTime(time);
 
        Calendar begin = Calendar.getInstance();
        begin.setTime(beginTime);
 
        Calendar end = Calendar.getInstance();
        end.setTime(endTime);
 
        return date.after(begin) && date.before(end);
    }
 
    // 判断两个时间是否相等
    public static boolean equals(Date time1, Date time2) {
 
        Calendar calendar1 = Calendar.getInstance();
        calendar1.setTime(time1);
 
        Calendar calendar2 = Calendar.getInstance();
        calendar2.setTime(time2);
 
        return calendar1.equals(calendar2);
    }
 
    // 判断开始时间是否小于结束时间
    public static boolean before(Date startTime, Date endTime) {
 
        Calendar begin = Calendar.getInstance();
        begin.setTime(startTime);
 
        Calendar end = Calendar.getInstance();
        end.setTime(endTime);
 
        return begin.before(end);
    }
 
    // 判断开始时间是否大于结束时间
    public static boolean after(Date startTime, Date endTime) {
 
        Calendar begin = Calendar.getInstance();
        begin.setTime(startTime);
 
        Calendar end = Calendar.getInstance();
        end.setTime(endTime);
 
        return begin.after(end);
    }
	
    // 时间差与给定的分钟数，相比较
    public static int dateCompare(Date startDate, Date endDate, long minutes) {
        int result = 0;
        long startTime = startDate.getTime();//相比较的时间
        long endTime = endDate.getTime();//相比较的时间
        long time = (endTime - startTime);//相差毫秒数
 
        //时间差（毫秒数） 大于 给定分钟数*60*1000
        if (BigDecimal.valueOf(time).compareTo(BigDecimal.valueOf(minutes * 60 * 1000)) == 1) {
            result = 1;
        }
 
        //时间差（毫秒数） 等于 给定分钟数*60*1000
        if (BigDecimal.valueOf(time).compareTo(BigDecimal.valueOf(minutes * 60 * 1000)) == 0) {
            result = 0;
        }
 
        //时间差（毫秒数） 小于 给定分钟数*60*1000
        if (BigDecimal.valueOf(time).compareTo(BigDecimal.valueOf(minutes * 60 * 1000)) == -1) {
            result = -1;
        }
 
        return result;
    }
 
    // 校验日期格式
    public static boolean isDateFormat(String str,String formatStr) {
        boolean result = true;
        SimpleDateFormat format = new SimpleDateFormat(formatStr);
        try {
            format.setLenient(false);
            format.parse(str);
        }catch (Exception e){
            result = false;
        }
        return result;
    }
	/**********************************涉及时间比较判断处理***************************************/
 
	/**********************************涉及时间与时间字符串转换处理*******************************/
    // 时间字符串转换成时间
    public static Date toDateTime(String date) {
        SimpleDateFormat sDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        try {
            return sDateFormat.parse(date);
        } catch (ParseException e) {
            return null;
        }
    }
 
    // 时间转换成时间字符串
    public static String toDateTimeStr(Date date) {
        SimpleDateFormat sDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        try {
            return sDateFormat.format(date);
        } catch (Exception e) {
            return null;
        }
    }
 
    // 时间字符串转换成日期
    public static Date toDate(String date) {
		return toDate(date, "yyyy-MM-dd");
    }
 
    // 时间格式化成日期字符串
    public static String toDateStr(Date date) {
		return toDateStr(date, "yyyy-MM-dd");
    }
 
    // 时间格式转化成时间字符串
    public static String toDateStr(Date date, String format) {
        SimpleDateFormat sDateFormat = new SimpleDateFormat(format);
        try {
            return sDateFormat.format(date);
        } catch (Exception e) {
            return null;
        }
    }
 
    // 时间字符串格式转化日期
    public static Date toDate(String date, String format) {
        SimpleDateFormat sd = new SimpleDateFormat(format);
        try {
            return sd.parse(date);
        } catch (Exception e) {
            return null;
        }
    }
	/**********************************涉及时间与时间字符串转换处理*******************************/
}